MIL-DTL-38999 Series I connectors offer a robust solution for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The connectors come in high strength aluminum shells with options for different plating finishes, including RoHS certified cadmium-free options. They are environmentally sealed and offer reliable performance with a mating life of 500 cycles. Suitable for military and industrial use, these connectors provide conductivity and ingress protection, making them a versatile choice for critical applications.